Intellectual Property and Copyright - An Interesting Proposed Solution from the French

This article talks about a proposition in France that may become law. It is basically a three-strikes rule for violators of copyright laws on the internet. If you are caught three times, you lose all your internet privileges for one year. My question is whether ISPs in the US would have an incentive to help enforce a law like this, were it to be put in place here. Would they want to help shrink their base of paying customers?

This line from the article is a little ridiculous, especially coming from a "conservative":

He added that the internet has become an "essential commodity" that allows people access to social services and that their removal would be "traumatic for a family."

UPDATE 11/23/2008:
The EU has struck down the French law. Article here.